MN345 Sample ID MN345 • Educational Cabinets Phlogopite 37.189cm W x 1.769cm H x 25.863cm D • 2754g Sample TypeMineralColorBrownLusterVitreous StreakWhiteCleavage/FracturePerfect basal cleavageSpecific Gravity Geographic Location/DateCardiff Mine Wilberforce Ontario Canada Mohs Hardness 3 A large and dense sample of phlogopite. The color varies from Light brown to medium brown to black. There is a label on the back listing the location and signed off as "J." Description of Mohs scale here